Which method is most effective for evaluating the success of CPR?

Checking for a pulse is the most effective method for evaluating the success of CPR because it directly indicates whether effective blood circulation is being achieved. When CPR is performed correctly, it should generate enough blood flow to the brain and vital organs to restore a pulse. Finding a pulse signifies that the heart is pumping blood effectively, which is the ultimate goal of resuscitation efforts.

Other methods, such as listening for lung sounds or measuring blood pressure, do not provide immediate feedback during the resuscitation process as they may be influenced by other factors or take time to assess properly. Assessing skin color can provide some indication of blood flow and oxygenation, but it is less direct and not as reliable as checking for a pulse. Therefore, the pulse is the clearest manifestation that CPR is working and circulation is being restored.